A blog about one man's journey through code… and some pictures of the Peak District

Testing for Exceptions using the Arrange Act Assert Pattern in C# 7

Unit testing massively benefits from following the Arrange / Act / Assert pattern. I’ve seen tests that are not written in this way, and they can be sprawling and indecipherable, either testing many different things in series, or testing nothing at all except the .Net Framework.

I recently found an issue while trying to test for an exception being thrown, which is that Nunit (and probably other frameworks) test for an exception by accepting a delegate to test. Here’s an example: